CN104845208A - High-ductility and high-strength PTT composition - Google Patents

Abstract

The present invention discloses a high-ductility and high-strength PTT composition, which comprises the following components in mass percentage: 60-85% of PTT, 5-10% of MBS, 2-5% of ABS graft polymers, 2-15% of kaolin, 0.1-0.5% of coupling agent, 0.1-0.5% of antioxidant, 0.1-1% of lubricant, and 8-12% of glass fibers. The ABS graft polymers are bifunctional graft ABS polymers composed of MAH and MMA. The kaolin is in the form of kaolin nano-particles, wherein the longitudinal thickness and the lamella dimension thereof are respectively within the ranges of 20-50 nm and 300-500 nm. The high-ductility and high-strength PTT composition is highly impact-resistant, good in toughness, excellent in mechanical performance, good in profile, and low in cost. The notch impact strength of the composition is over 105 kJ/m2 and the largest tensile strength of the composition is up to 42.8 MPa.

Description

A kind of Poly(Trimethylene Terephthalate) composition of High-tenacity high-strength

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of Poly(Trimethylene Terephthalate) composition of High-tenacity high-strength.

Background technology

Poly(Trimethylene Terephthalate) (PTT) is as a kind of new polyester macromolecular material of excellent combination property, the fields such as fiber, film, engineering plastics are widely used at present, but the defect that unmodified PTT exists, and notched Izod impact strength is low, notch sensitivity large, tensile strength is not high, thermotolerance is bad, this greatly limits PTT and applies widely in every field.

Summary of the invention

The object of the present invention is to provide a kind of Poly(Trimethylene Terephthalate) composition of High-tenacity high-strength.

The technical solution adopted for the present invention to solve the technical problems is: a kind of Poly(Trimethylene Terephthalate) composition of High-tenacity high-strength, and its component by mass percent proportioning is: PTT 60% ~ 85%, MBS 5% ~ 10%, ABS graft polymer 2% ~ 5%, kaolin 2% ~ 15%, coupling agent 0.1% ~ 0.5%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, glass fibre 8% ~ 12%.

Described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.5 ~ 1.5dL/g.

Described MBS is the Methacrylate-butadiene-styrene with nucleocapsid structure, its relative density 1.09 ~ 1.11g/cm3.

Described ABS graft polymer is maleic anhydride and methyl methacrylate bifunctional graft ABS polymer.

Described kaolin is that longitudinal thickness is at 20 ~ 50nm, the lamella size kaolin nanoparticle within the scope of 300 ~ 500nm.

Described coupling agent is γ-glycidoxypropyltrime,hoxysilane.

Described oxidation inhibitor is the one in the compound of antioxidant 1010, antioxidant 1076, antioxidant 1010 or antioxidant 1076 and irgasfos 168.

Described lubricant is modification ethylene bis-fatty acid amides.

Described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process.

The preparation method of the Poly(Trimethylene Terephthalate) composition of above-mentioned a kind of High-tenacity high-strength, comprises the following steps:

(1) forced air circulation baking oven, by PTT is placed at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by kaolin at 60 DEG C ~ 80 DEG C temperature dry 1 ~ 2 hour, stand-by;

(2), ABS graft polymer is prepared: take maleic anhydride 4wt%, methyl methacrylate 5wt%, dibenzoyl peroxide 1wt% and ABS 90wt% by weight ratio, and add respectively in high-speed mixer, stir 20 ~ 40 minutes at 50 DEG C ~ 90 DEG C temperature, then discharging, add in twin screw extruder, graft reaction is carried out and extruding pelletization under extrusion temperature 150 DEG C ~ 200 DEG C, screw speed 100 ~ 150r/min, obtain described ABS graft polymer, stand-by;

(3) take kaolin and coupling agent, by weight ratio, add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by;

(4), taking dry PTT by weight ratio adds in high-speed mixer, add the MBS, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, and add the obtained ABS graft polymer of step (2) by weight ratio, and add the product that step (3) obtains, make to stir 3 ~ 5 minutes together, discharging after fully mixing;

(5), the compound of step (4) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 300r/min, processing temperature is 210 DEG C ~ 260 DEG C scopes, then extruding pelletization, obtains the Poly(Trimethylene Terephthalate) composition of a kind of High-tenacity high-strength of the present invention.

The invention has the beneficial effects as follows, the present invention has that shock strength is high, good toughness, excellent in mechanical performance, profile are good, low cost and other advantages, its notched Izod impact strength can reach more than 105kJ/m2, and tensile strength reaches as high as 42.8MPa.

Embodiment

Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.

Embodiment 1:

A kind of Poly(Trimethylene Terephthalate) composition of High-tenacity high-strength, its component by mass percent proportioning is: PTT 60%, MBS 10%, ABS graft polymer 4%, kaolin 15%, γ-glycidoxypropyltrime,hoxysilane 0.3%, antioxidant 1010 0.2%, modification ethylene bis-fatty acid amides 0.5%, glass fibre 10%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.5 ~ 1.5dL/g, described MBS is the Methacrylate-butadiene-styrene with nucleocapsid structure, its relative density 1.09 ~ 1.11g/cm3, described ABS graft polymer is maleic anhydride and methyl methacrylate bifunctional graft ABS polymer, described kaolin is that longitudinal thickness is at 20 ~ 50nm, the kaolin nanoparticle of lamella size within the scope of 300 ~ 500nm, described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process.

Preparation method: (1), PTT is placed in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by kaolin at 60 DEG C ~ 80 DEG C temperature dry 1 ~ 2 hour, stand-by; (2), ABS graft polymer is prepared: take maleic anhydride 4wt%, methyl methacrylate 5wt%, dibenzoyl peroxide 1wt% and ABS 90wt% by weight ratio, and add respectively in high-speed mixer, stir 20 ~ 40 minutes at 50 DEG C ~ 90 DEG C temperature, then discharging, add in twin screw extruder, graft reaction is carried out and extruding pelletization under extrusion temperature 150 DEG C ~ 200 DEG C, screw speed 100 ~ 150r/min, obtain described ABS graft polymer, stand-by; (3) kaolin and γ-glycidoxypropyltrime,hoxysilane, is taken by weight ratio, add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by; (4), taking dry PTT by weight ratio adds in high-speed mixer, add the MBS, antioxidant 1010, the modification ethylene bis-fatty acid amides that take by weight ratio simultaneously, and add the obtained ABS graft polymer of step (2) by weight ratio, and add the product that step (3) obtains, make to stir 3 ~ 5 minutes together, discharging after fully mixing; (5), the compound of step (4) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 300r/min, processing temperature is 210 DEG C ~ 260 DEG C scopes, then extruding pelletization, obtains the Poly(Trimethylene Terephthalate) composition of a kind of High-tenacity high-strength of the present invention.

Embodiment 2:

A kind of Poly(Trimethylene Terephthalate) composition of High-tenacity high-strength, its component by mass percent proportioning is: PTT 70%, MBS 8%, ABS graft polymer 3%, kaolin 10%, γ-glycidoxypropyltrime,hoxysilane 0.2%, the compound 0.1% of antioxidant 1076 and irgasfos 168, modification ethylene bis-fatty acid amides 0.7%, glass fibre 8%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.5 ~ 1.5dL/g, described MBS is the Methacrylate-butadiene-styrene with nucleocapsid structure, its relative density 1.09 ~ 1.11g/cm3, described ABS graft polymer is maleic anhydride and methyl methacrylate bifunctional graft ABS polymer, described kaolin is that longitudinal thickness is at 20 ~ 50nm, the kaolin nanoparticle of lamella size within the scope of 300 ~ 500nm, described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process.

Preparation method: (1), PTT is placed in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by kaolin at 60 DEG C ~ 80 DEG C temperature dry 1 ~ 2 hour, stand-by; (2), ABS graft polymer is prepared: take maleic anhydride 4wt%, methyl methacrylate 5wt%, dibenzoyl peroxide 1wt% and ABS 90wt% by weight ratio, and add respectively in high-speed mixer, stir 20 ~ 40 minutes at 50 DEG C ~ 90 DEG C temperature, then discharging, add in twin screw extruder, graft reaction is carried out and extruding pelletization under extrusion temperature 150 DEG C ~ 200 DEG C, screw speed 100 ~ 150r/min, obtain described ABS graft polymer, stand-by; (3) kaolin and γ-glycidoxypropyltrime,hoxysilane, is taken by weight ratio, add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by; (4), taking dry PTT by weight ratio adds in high-speed mixer, add the compound of MBS, antioxidant 1076 and the irgasfos 168 taken by weight ratio, modification ethylene bis-fatty acid amides simultaneously, and add the obtained ABS graft polymer of step (2) by weight ratio, and add the product that step (3) obtains, make to stir 3 ~ 5 minutes together, discharging after fully mixing; (5), the compound of step (4) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 300r/min, processing temperature is 210 DEG C ~ 260 DEG C scopes, then extruding pelletization, obtains the Poly(Trimethylene Terephthalate) composition of a kind of High-tenacity high-strength of the present invention.

Claims (5)

1. the Poly(Trimethylene Terephthalate) composition of a High-tenacity high-strength, it is characterized in that, its component by mass percent proportioning is: PTT 60% ~ 85%, MBS 5% ~ 10%, ABS graft polymer 2% ~ 5%, kaolin 2% ~ 15%, coupling agent 0.1% ~ 0.5%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, glass fibre 8% ~ 12%.

2. the Poly(Trimethylene Terephthalate) composition of a kind of High-tenacity high-strength according to claim 1, is characterized in that, described ABS graft polymer is maleic anhydride and methyl methacrylate bifunctional graft ABS polymer.

3. the Poly(Trimethylene Terephthalate) composition of a kind of High-tenacity high-strength according to claim 1, is characterized in that, described kaolin is that longitudinal thickness is at 20 ~ 50nm, the lamella size kaolin nanoparticle within the scope of 300 ~ 500nm.

4. the Poly(Trimethylene Terephthalate) composition of a kind of High-tenacity high-strength according to claim 1, is characterized in that, described coupling agent is γ-glycidoxypropyltrime,hoxysilane.

5. the preparation method of the Poly(Trimethylene Terephthalate) composition of a kind of High-tenacity high-strength according to claim 1, is characterized in that, comprise the following steps:

(1) forced air circulation baking oven, by PTT is placed at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by kaolin at 60 DEG C ~ 80 DEG C temperature dry 1 ~ 2 hour, stand-by;

(2), ABS graft polymer is prepared: take maleic anhydride 4wt%, methyl methacrylate 5wt%, dibenzoyl peroxide 1wt% and ABS 90wt% by weight ratio, and add respectively in high-speed mixer, stir 20 ~ 40 minutes at 50 DEG C ~ 90 DEG C temperature, then discharging, add in twin screw extruder, graft reaction is carried out and extruding pelletization under extrusion temperature 150 DEG C ~ 200 DEG C, screw speed 100 ~ 150r/min, obtain described ABS graft polymer, stand-by;

(3) take kaolin and coupling agent, by weight ratio, add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, after rotating speed 3000 ~ 4500 revs/min stirs 10 ~ 45 minutes, be cooled to lower than 40 DEG C of dischargings stand-by;

(4), taking dry PTT by weight ratio adds in high-speed mixer, add the MBS, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, and add the obtained ABS graft polymer of step (2) by weight ratio, and add the product that step (3) obtains, make to stir 3 ~ 5 minutes together, discharging after fully mixing;

(5), the compound of step (4) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 300r/min, processing temperature is 210 DEG C ~ 260 DEG C scopes, then extruding pelletization, obtains the Poly(Trimethylene Terephthalate) composition of a kind of High-tenacity high-strength of the present invention.